Check-valve for internal-combustion engines.



J. D. Russ; CHECK VALVE FOR INTERNAL COMBUSTIONENGINES.

APPLICATION FILED AUG. 17, 1912.

' Patented June24, 1913.

WIN/E8858 JOHN D. RUSS, QF SPENCER, WEST VIRGINIA.

CHECK-VALVE FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented June 24,1913.

Application filed August 17, 1912. Serial No. 715,612.

To all whom it may concern:

Be it known that I, JOHN D. Russ, a citizen of the United States, residing at Spencer, in the county of Roane and State of Vest Virginia, have invented new and useful Improvements in Check-Valves for Internal-Comlmstion Engines, of which the following is a specification.

As is well known, a serious ditliculty-experienced with the inlet and exhaust checkvalves of internal-combustion engines is the fact that they frequently stick, thus impairing and making uncertain the perfect operation of the engine. Check-valves, as commonly used in internal-combustion engines, are provided with a relatively long stem, which works in a long bearing, and it is in this bearing that considerable friction and consequent sticking arise. The head, or valve proper, also has a tendency to stick in its valve-seat.

One of the objects, therefore, of my inven tion is to provide a self-containing lubricating-valve, especially adapted for use as a check-valve in internal-combustio-n engines, which will be simple in construction, and absolutely efficient in operation. eliminating all sticking of the valve and valve-stem.

The invention comprehends a valve peculiarly constructed whereby its stem, as well as its head, or valve proper, is maintained in a condition of perfect lubrication; and another object of the invention is to provide means, novel in construction and simple and practical in operation, whereby the amount of lubricating matter admitted to the head, or valve proper, from the source of self-coin tained lubricani-supply in the valve-stem, may be regulated or adjusted at will.

Another object of the invention is to provide safety means for preventing the valve becoming entirely disengaged from its bearing and dropping into the engine-cylinder while being cleaned, or the like.

.Another object of the invention isto construct the valve-head, or valve proper, in a novel manner, whereby it may be easily cleaned.

Further objects of advantageous improveincnt will appear as the specification proceeds-and the nature of the invention more fully appears.

bodiment of the invention susceptible of carrying out the underlying principles thereof.

In this drawing, in which like referencecharacters denote corresponding parts throughout the several views: Figure I is a central, longitudinal, sectional view through a check-valve constructed in accordance with my invention; Fig. II is a section on the line 22, Fig. I; Fig. III is a section on the line 38, Fig. I; Fig. IV is a detached, detail, perspective view of the needle valve; and Fig. V is a fragmentary sectional view of a portion of a slightly modified form of valve. 5

Referring, now, in detail to the drawing: 1 designates the check-valve head, or checkvalve proper, which is constructed hollow, as shown, and with an open top, normally closed by a cap 2. This cap may, if desired, be screwed into the top of the valve head 1, in which case it-is provided with a central,

projecting boss 3providcd with a screwdriver groove 4, or it may be secured to the valve-head by screws 5, as shown.

Extending through the sidewall of the valve-head 1, near the bottom of the internal chamber therein, is a series of holes 6, through which lubricant may escape from interio-rly of the valve outward to the valveseatengaged by the valve 1.

Above the series of holes 6, the valve 1 is provided interiorly, at a point considerably below the top of said internal chamber, with a circular ledge 7 on which is seated a disk 8, of foraminous material. The disk 8 thus divides said internal chamber into two sections, an upper and a lowerone. In the upper section (that is, between said disk 8 and the ap 2) may be placed a wick 8, of any suitable substance, such as graphite and oil, brass-gauze. or other heat-resisting substance, or the like.

9 is the valve-stem, constructed hollow, as shown, the bore communicating with the internal chamber of the valve 1. The valvestem is provided with a plurality of holes 10 extending -t. 'ansversely through the wall therehf, whereby lubricant is supplied from the-interior of the valvestem outward to the bearing in whichsaid stem works or reciprocates. The valve-stem may, also, be provided with shallow, circumferential grooves 10 to hold oil and, also, to catch therein any foreign, gritty matter which would tend to set up friction.

fit the head of the valve-stem 9, in the -l ore thereof, is disposed a. centrally-aperturcd, cylindrical plug 11, preferably suitably dctachably srcured to said stem, and provided, at its lower end, with an approximately coue-shapcd portion .12, constituting a valve-seat, adapted to be engaged by a needle-valve 13, having a stem 14, terminatmuch, or as little, lubricant, as may be de-' sired. The butt is provided with a plu rality of longitudinallyextending, eccentrically-disposed holes '18 extending therethrough, for the passage of lubricant.

Disposed in the bore of the stem 9 is an open-ended cylinder 19, of foramino-us material, containing a wick 20, of any suitable material, such as graphite and oil. By means of this cylinder, the wick, contained therein, may be removed bodily \with a maximum of ease and celerity. The needle-valve stein let projects through said wick.

The end of the valve-stem 9 oppositethe head 1 is provided with an exteriorlythreaded portion 21, on which is screwed a safety ring 22, which prevents the valve becoming entirely disengaged from its hearing and thus dropping into the engine-cylinder, when the valve is being cleaned, or the like; since, as is obvious, the ring enthe wall of the engine-cylinder and prevents further inward movement of the valve-stem 9. Also screwed on the threaded portion 21 is a hollow cap 23, constitut- 13H) end 26 of a leaf-s )rin 27 secured to the in- 1 lerior surface of the wall of said reservoir 523. lit will be noticed that the 13211125 and its spring 27 constitute a valve, which automatically closes as soon as the filling-nozzle oi an oil-can, or the like, is withdrawn from the hole 2%, after filling said oil-reservoir.

Referring, now, to Fig. 5, showing a slightly-modified form: This is practically the same construction as shown in the preceding figures of the drawing. The only d .erence is that the butt 18 has astem 28, which projects through the'end wall of the oil-reservoir 23, whereby the needlevalve may be adjusted, without having'previously to remove the oil-reservoir 23*, as is pecessary with the device of the preseding org-ores.

It will be observed that, by making the and seat.

oil-well or reservoir, provided withv working of my valve at high speed much more certain, even with weaker valvesprings. I

My valve is also of great value in the large type of gas-engines, as the lubricating and cleaning of the valve can be accomplished without taking the engine down, because my internal lubricating system makes it possible toclean the valve-seat without removing the valve.

In the old system of supplying the lubricant from outside the valve, the oil is soon sucked away from the valve-seat and stem; in my internal wick system, the oil lies in the interior of the .stem and head, hence it is out of the line of suction, and moves but slowly, and surely lubricates the Valve-stein 1 From the above description, taken in connection with the drawing, the many advantages of my invention will be apparent,

especially to those skilled in the art to which the invention appertains.

I am aware that many modifications in detail may be resorted to from the specific structure herein described and illustrated with great particularity; but all such changes and modifications as come within the terms of the appended claims, constitute no departure from the spirit of the invention, and fall strictly within the scope and purview thereof.

Having thus'fully described my inven tion, what I claim as new and desire to secure by Letters-Patent of the United States is 1. A check-valve comprising a hollow head, a communicating hollow stem, a lubri- 0 cant-wick disposed in said stern for feeding lubricant therethrough to said head, and a disk of foraminous material disposed within said head and dividing the same into two compartments.

2. A check-yalye comprising a hollow head, a communicating hollow stem, a lubricant-wick disposed in said stem for feeding lubricant therethrough to said head, a disk of foraminous material disposed within said head and dividing the same into two compartments, and a body of heat-resisting material disposed in one of said compartments.

'A check-valve, comprising a head and a stem, said stem being hollow and provided, at the end thereof toward said head, with an internal valve-seat, and a valve disposed within said hollow stem and engageable with said valve-seat, and having a stem provided with a butt at the end thereof,

ithe wall of said said butt engagin the interior surface of the wall of said first-mentioned stem, and being provided with longitudinally-extending holes therethrough.

4. A check-valve, comprising a head and a stem, said stem being hollow and provided, at the end thereof toward said head, with an internal valve-seat, a valve disposed within said hollow stem and engageable with said valve-seat, and having a stem,

provided with a butt at the end thereof, said butt engaging the interior surface of the wall of said first-mentioned stem, and being provided with longitudinally-extending 0 es therethrongh, and a hollow, oilreservoir cap disposed on the end of said first-mentioned stem.

5. A check-valve, comprising a head and a stem, said stem being hollow and provided, at the end thereof toward said head, with an internal valve-seat, a valve disposed within said hollow stem and engageable with said valve-seat, and having a stem provided with-a butt at the end thereof, said butt engagin the interior surface of first-mentioned stein, and being provided with longitudinally-extending holes therethrough, and a hollow, oil

reservoir cap screwed on the end of said within said hollow stem and engageable with said .valve-seat, an open-ended cylinder, of'foraminous materialfdisposed within said hollow stem, and a wick disposed within said cylinder. 7 v In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN D. RUSS.

\Vitnesses:

Vmr N. Russ, G. T. SARVER. 

